﻿/**
 * Copyright (C) 2012 original author and authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NGuice.Inject.Spi;
using NGuice.Inject.Internal.Util;

namespace NGuice.Inject.Internal
{
    internal class ExposedBindingImpl<T> : BindingImpl<T>, IExposedBinding<T>
    {
        private readonly IPrivateElements privateElements;

        public ExposedBindingImpl(InjectorImpl injector, object source, Key<T> key,
            InternalFactory<T> factory, IPrivateElements privateElements)
            : base(injector, key, source, factory, Scoping.UNSCOPED)
        {
            this.privateElements = privateElements;
        }

        public override V AcceptTargetVisitor<V>(IBindingTargetVisitor<T, V> visitor)
        {
            return visitor.Visit((IExposedBinding<T>)this);
        }

        public ISet<Dependency> Dependencies
        {
            get
            {
                IEnumerable<Dependency> de = ImmutableSet<Dependency<Injector>>.Of(Dependency<Injector>.Get(Key<Injector>.Get())).Cast<Dependency>();
                return ImmutableSet<Dependency>.Of(de.ToArray());
            }
        }

        public IPrivateElements PrivateElements
        {
            get { return privateElements; }
        }

        public override string ToString()
        {
            return new ToStringBuilder(typeof(IExposedBinding<>))
                .Add("key", Key)
                .Add("source", Source)
                .Add("privateElements", privateElements)
                .ToString();
        }

        public override void ApplyTo(IBinder binder)
        {
            throw new NotSupportedException("This element represents a synthetic binding.");
        }

        public new Key Key
        {
            get { return base.Key; }
        }

        public new IProvider Provider
        {
            get { return base.Provider; }
        }
    }
}
